Portable lamp.



E. s. nanna.

PORTABLE LAMP. APPLRCATION VFILEDIULQA). 19W. V

Patented Aug. l:

is, mm. @HH "iwi W] NESSES gru termici Specification. ot Letters llatcnt.

Application tiled July' 2li, .1.917. Sciial No. infetti?.

To all whom it may emmer/i Be it known that l, lll'riinn l. lionne, n, citizen et the United Stetee., and a resident ot llittshnrgln in the county ci Allegheny and State oi Penneyliiania9 have invented; certain new and useful improvements ini Portable Lamps; and l do herein7 declare the following to he a ulh clear, and exact description oi the lnventinn, such :1S will enableA others chilled .in the art to which 1t 'appertains to malte and nee the naine.

rthis invcntieitrelates te improvements in portable lainin and particularly. te such as eniplcy a small incainleecent electric lamp and cariz;v a battery igor supplying the iila nient ol the lanip with ci1ri.'ent,--the object of in iv preeent invention being; to noccnstriict the lamp that its globe inay he rendered linninons by lighti'aye emanating' pericdi-- cally troni the incandescent lamp and retain nach hun inosity tor a consideraihlc time zitter the incainlcscent lmnp shall have been extinguished, and tn provide simple and elli cient means which will operate to cieSe the circuit ot the iiicandescent lamp at Stated intervals; to provide light for actiwatingg,` and reactivating the light absorbing material in.

the Ulobe.

lith this and other objects in View, the invention consists in certain nevel tentures ot constructioii .and ccn'lhiinitions opaits as hereinafter set toi-th and pointed cui; in the claims.

in the :wcninpanvifing drawings: Figure 1A is a rien' ot a portable lanip embodying my iinnroveinentn; and llig'. il is a diagrannnatifl cal View illustrating the saine.

l represents a casingwhicll may contain a, suitable lattcry 2 included inthe circuit cit an incand isc/cnt lamp bull) 3 inonntcd en the. casing` l. 'lhe fixture et' the linnn may he supported on the casting h); ineens oi. a snit' Vahlc bracket fland the latter also snppertn two glolics 5 and 6,one Within the othern The globe rcceircn and inclosee the la I n hull) 3 se that light troni the'latl'er will 'serre to nnil'ernily activate a pliespl'inrencent coating 'i on the inner tace et" the enter globe 5,--01 it desired, this coating; may he placed upon the enter Snrtace cit the iinier glohgl, The coating '7 may con'ipriiie each. material as zine or calcium nnliid and a small ainonnt ott radioactive innterial, Such as a salt oiv radium.

By flashing the,incandescent lamp, the

ceatingfl will he activated and it will retain its luminosity ier n ccnniderable period citer the lamp shall ha ve heen extinguished and. ilFord enllicient light to illuminate the curronntling area tor ordinary pnrposes Where a niild light desired.

ln order te 'anse the incandescent lainp te he lighted automatically at Stated intervals, to reactivate the light absorbing nr phS- plieresceiit coating and time insure the con tinniti7 et the glow et the phosplicreeccnt material' in the aelche 5, the devices new te lic deecitfied may' he einplr'ry'ed.

rlhe lei lcry and lnn'ip may he connected in ecriewA with a switch it. time mechanism such :ze a watch er cioe nnrvenient El is; l0- cated within. the casi Tl and its Windin. stein may project ci ,Wardly 4 through the wall oit said ciiaiiigi;q and i'iioviiiled with n head er key l0 which shall. he readily accensihle for 'winding the Watch er clock. The dial ot the movement in previdcd with tn'c nl contacts; lit-l2 :spaced at any deeire'd. ilar intervale, and ceiitact iiiigers lil-M carried and electrically connected by. a liloclc l connected with the Spindle oi: the minute hand. oithe watch or clock movement, Seid contact fingern being; adapted te Wipe over the cnntacts llmi on the dial. All et the contacte ot' the ect ll are electrically cen `nected in a cirtniit 1G with one ot the terminale ot the switch. tl, and all oit the contacte l2 are. connected in 'a circuit il' with the other terminal. ot the Switch 8. lilith such construction, it will he apparent 'that when the switch fi is closed, and the spring lingers lll-lllon the time n'lechaninnl wipe over contacts 11m-l2 et the respective series, the circuit ot the incandescent lamp ,will he closed onlil iliiiriing` euch time 'that the contact lingers 'l5-14 are pnfssingg ever the contacts tlf-lh find the incandescent lanipin'ill reinain lighted .ter nv infie/'ltb period het te activate or reactivate the pheephereeccnt coating. 'lhc plinspliorceimit coating inlay thus he activated periodically when' the .twitch S is clenedanrgl the time mechanism, is running.

lla'vin tally described my inventien what l claini an nen' and desire to secure hy lhettcrn-ltatents tl. .it linnn cen'iprieing' a ligloloe and a source et electric light within Said globe, pliesphorescent materiel within said giclee, and e tin'ie operated circuit closer in the circuit et i oui-ce oi? electric light for periodically and opening seid circuit.

lamp comprising e globe, e coating io nligiiesceiit material witliin the globe, en eleva ric light device within the globe for activating said coating, a time operated circuit closer comprisingii movable member and ii plurality' of stationary contacts iiicliidetl .in the cii'cuitof the electric light (lf3/tifo.

3. .er vlatini; comprising :i casing, u globe iiiounteti thereon, pliosplioresceiit material iii f itl globe, in electric light device within be for activating Said material, :i 'in Seid casing, an electric circuit iiiof stationary contacts coperuble therewith, 20

mounted in saidv casing und included in Suid circuit. l

In testimony whereof I have signed this specification in the presence of two subscribin g witnesses'.

ETI-IAN I. DODDS. llWitnesses EDWIN SPENCER RYCE, F. H'. ALLISQN. 

